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Search: id:A147507
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| A147507 |
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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11110-01111 pattern in any orientation. |
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+0
1
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| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 25, 25, 141, 141, 673, 673, 9515, 9515, 128879, 128879, 2409621, 2409621, 79940355, 79940355
(list; graph; listen)
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OFFSET
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1,11
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EXAMPLE
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Maximal 11 X 11 example
.0.1.0.1.0.0.0.1.0.1.0
.1.1.0.1.1.0.1.1.0.1.1
.1.1.0.1.1.0.1.1.0.1.1
.1.1.0.1.1.0.1.1.0.1.1
.1.0.0.0.1.0.1.0.0.0.1
.0.0.0.0.0.0.0.0.0.0.0
.1.0.0.0.1.0.1.0.0.0.1
.1.1.0.1.1.0.1.1.0.1.1
.1.1.0.1.1.0.1.1.0.1.1
.1.1.0.1.1.0.1.1.0.1.1
.0.1.0.1.0.0.0.1.0.1.0
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CROSSREFS
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Sequence in context: A040601 A022359 A147491 this_sequence A146865 A146740 A146724
Adjacent sequences: A147504 A147505 A147506 this_sequence A147508 A147509 A147510
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net)
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